Asteroids

2025QK9 help

Last update: 2025-11-24 19:20 UTC

Orbital Properties

Epoch

61000.0

MJD

Orbit type

Apollo

Perihelion (q)

0.976

Aphelion (Q)

3.493

Eccentricity (e)

0.563

Inclination (i)

1.3

deg

Orbit period (P)

1220.1

Earth MOID

0.00625

U parameter

7.2

Next Earth close approach

Date

2035-10-13

Nominal distance (from Earth center)

0.02307

3451181

Maximum Brightness

31.6

mag

Risk

Object is not in risk list

Physical Properties

Absolute Magnitude (H)

24.2

mag

Diameter

40 - 80*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2025-08-25

Observatory

Pan-STARRS 2, Haleakala

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

61000.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.234608

1-sigma variation

0.001312

Unit

Eccentricity (e)

Value

0.563260

1-sigma variation

0.000260

Unit

Inclination (i)

Value

1.2628

1-sigma variation

0.0004

Unit

Long. of Ascending Node (Ω)

Value

16.0593

1-sigma variation

0.0018

Unit

Arg. of Perihelion (ω)

Value

358.3116

1-sigma variation

0.0019

Unit

Mean Anomaly (M)

Value

14.38022

1-sigma variation

0.01220

Unit

Perihelion distance

Value

0.975942

1-sigma variation

Unit

Aphelion distance

Value

3.493274

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

-0.023057

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.489483

1-sigma variation

Unit

MOID

Value

0.006254

1-sigma variation

Unit

Orbit Period

Value

1220.1141

1-sigma variation

Unit

U parameter

Value

7.2

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	1.72143E-6	3.41764E-7	4.84969E-7	2.22272E-6	-2.38505E-6	-1.60004E-5
e	3.41764E-7	6.78522E-8	9.62832E-8	4.41311E-7	-4.73535E-7	-3.17664E-6
i	4.84969E-7	9.62832E-8	1.36731E-7	6.21118E-7	-6.67189E-7	-4.50762E-6
Ω	2.22272E-6	4.41311E-7	6.21118E-7	3.14375E-6	-3.33327E-6	-2.06655E-5
ω	-2.38505E-6	-4.73535E-7	-6.67189E-7	-3.33327E-6	3.54022E-6	2.21737E-5
M	-1.60004E-5	-3.17664E-6	-4.50762E-6	-2.06655E-5	2.21737E-5	1.48721E-4

Date of computation: 2025-11-24 19:20 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

24.243

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

40 - 80*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

Unit

Source

[1]

Normalized RMS of residuals

Value

0.185763

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2025-08-25.30791

Unit

Source

[2]

Last Observation

Value

2025-10-20.510585

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

19 (0)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[-]

Last Observation

Value

Unit

Source

[-]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[-]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[-]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 2025QK9 from 1950 to 2126

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1972-11-18 08:38	> 1 mo	0.1524260	0.0079823	49.2544254
EARTH	2005-10-31 03:11	> 1 mo	0.0101650	0.0053645	0.6774939
EARTH	2015-09-14 02:48	> 1 w	0.0105586	0.0100754	0.0092945
EARTH	2025-09-16 19:38	< 1 min	0.0106642	0.0106523	0.0000040
EARTH	2035-10-13 01:06	> 1 w	0.0230697	0.0112551	0.0110460
EARTH	2045-11-01 02:49	> 1 w	0.0165748	0.0068823	0.0304800
MARS	2082-06-20 09:58	> 1 mo	0.0122608	0.0116123	0.3317120
EARTH	2092-09-25 10:42	> 1 mo	0.0264467	0.0128098	1.1851830

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
9.54340830	291.93416617	0.00625377	MINIMUM
347.65873505	250.88561586	0.00942066	MINIMUM
358.37089411	271.00067447	0.02417339	SADDLE
358.50787246	91.26036749	1.97730171	SADDLE
179.58312138	92.56220067	2.49171767	SADDLE
179.58459125	272.56341666	4.49313053	MAXIMUM

Download:

MOID Plots

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